3CX, 4CX
The sideshift clamp seal is a key component that maintains oil pressure in the rams that lock the rear arm's sideshift. If your excavator arm drifts sideways during operation, doesn't hold its position, and you see oil leaks around the rams, these are classic symptoms of a worn seal. This failure leads to a dangerous "floating" of the arm, which prevents precise work and accelerates wear on the slide pads.
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Secure Sideshift Lock
Eliminates uncontrolled movement
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Oil-Resistant Material
Guaranteed seal tightness
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Restored Precision
Comfortable and accurate work
A stable arm is fundamental for safe operation, especially during precise tasks or when working on slopes.
Eliminating play and friction protects against accelerated wear of slide pads, rams, and the sideshift frame.
Replacing the seal is an inexpensive repair that prevents much more costly failures in the future.
This seal is exclusively for older machines (up to 10/1999). Make sure you are ordering the correct version to avoid installation problems.
Before installing the new seal, inspect the surface of the cylinder rod. Any scratches, burrs, or pitting will quickly destroy the new part.
Answer: They differ in size and profile. This model (904/09400) is for machines manufactured up to October 1999, while 904/20336 fits newer models.
Question: Do I need special tools for replacement?Answer: Replacing seals in hydraulic cylinders requires basic tools, but above all, great cleanliness and care to avoid damaging the new part during installation.
If you are unsure whether the selected product is suitable for your machine, contact us and we will help you choose the right part and provide practical advice in minutes.
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